Thank you both for the thoughtful and helpful responses.
The utility of the length of the free list is somewhat dubious. I imagine
it could be useful to answer the question of "is there a chance that
increasing shared buffers would be useless?" in an optimization context.
Agreed it's not useful
Robert Berry writes:
> I'm looking at doing a calculation to determine the number of free buffers
> available. A n example ratio that is based on some data structures in
> freelist.c as follows:
> (StrategyControl->lastFreeBuffer - StrategyControl->firstFreeBuffer) /
> (double) NBuffers
> Is th
On Mon, Mar 10, 2014 at 2:09 PM, Robert Berry wrote:
> Is there a way to get access to the StrategyControl pointer in the context
> of a background worker?
StrategyControl is inherent to freelist.c and has no external
declaration so you could not have it even if you the
BGWORKER_SHMEM_ACCESS flag.
Dear Hackers --
I'm looking at doing a calculation to determine the number of free buffers
available. A n example ratio that is based on some data structures in
freelist.c as follows:
(StrategyControl->lastFreeBuffer - StrategyControl->firstFreeBuffer) /
(double) NBuffers
Is there a way to get
